"Contractual Purity" can't be both YMMV and Trivia.

I noticed that Contractual Purity is in the YMMV and Trivia pages when it can't be in both pages at once. Should Contractual Purity really go in the Trivia page only? Just wondering.

The banner on the page says Trivia. No reason why it should go in both.

The trope appears to be about the public perception of purity, rather than the actual contract, as evidenced by the quote "Very often will actually be enforced by a morals clause in the contract." Since that's "very often" and not "always," the trope is not about the actual enforcement. Therefore, the trope does not belong in trivia. If the trope were about the actual enforcement clause of the contract, it would be a factual point of interest, and thus trivia (and not YMMV).

So yeah, my vote is for YMMV.